Operating System (OS)
Which is the layer of a computer system between the hardware and the user program

System environment
None
Operating environment
Operating system

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Assembler language

is usually the primary user interface
is quite different from the SCL interpreter
is a mnemonic form of machine language
None of these
requires fixed-format commands

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Addressing structure

None of these
defines the fundamental method of determining effective operand addresses
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
All of these
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.

ANSWER DOWNLOAD EXAMIANS APP